DO NOT MERGE Revert "MediaRouterButton: Make the button always enabled"

This reverts commit 8a54ce6b8b595c145ea534510d5d1904ee7d5415.

Bug: 32108506
Change-Id: I6ad89c7df0f1991d45696f33efb8b0b1bbe67bcc
(cherry picked from commit 44f505b3340199ca7f31f0912bd6de227ab36899)
1 file changed